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2학기자바스터디/운세게임




Date Calendar 클

Date


~cpp 
 Date today = new Date(); // today   Date 
 System.out.println(today); //  today String    

한 형 SimpleDateFormat .


~cpp 
 SimpleDateFormat dateForm = new SimpleDateFormat("yyyy MM dd hh mm ss"); //  
 System.out.println(dateForm.format(today)); // today Date dateForm   


y
M
d
h (1~12)
H (0~23)
m
s
S 1/1000
E
a /

Calendar

~cpp 
 Calendar now = Calendar.getInstance(); //      
 int hour = now.get(Calendar.HOUR); //   
 int min  = now.get(Calendar.MINUTE); //   

Calendar클
YEAR
MONTH
DATE
HOUR (1~12)
HOUROFDAY (0~23)
MINUTE
SECOND
MILLISECOND 1/1000
DAYOFWEEK
AMPM /

(Random)

~cpp 
 Random r = new Random();
 int num = r.nextInt(); // Int(-2147483648 ~ 214783647)   
 int num2 = r.nextInt() % 10; // -9 ~ 9   
 int num3 = Math.abs(r.nextInt() % 10); // 0 ~ 9   . Math.abs()  


~cpp 
2003 9 27 
:-97%
:43%
:-99%
:-96%


,,, -100 ~ 100 (행할 )

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